Rotary pump



Nov. 4, 1947.

` Byl d/away 159mm NOV. 4, 1947. 1 M PARlNE 2,430,362

ROTARY PUMP Filed Nov. 23, 1945 2 Sheets-Sheet 2 Inventor By @Mao/532% WWW/gy ,5MM

named Nov. 4, 1947 ROTARY PUMP` Louis M. Parine, Detroit, Mich.

Application November 23, 1945, Serial No. 630,200 4 Claims. (Cl. 103-161) This invention relates to rotary pumps of the type disclosed in U.V S. Patent 1,332,516, granted March 2, 1920, to Francis J. ODonnell.

The primary object of the present invention is to provide a rotary pump of the above type which is extremely simple in construction, cheap to manufacture, and efficient in operation.

More specifically, the invention contemplates the provision of a rotary pump of the above type which comprises a minimum number of relatively simple parts which may be conveniently assembled or taken apart for repair,

The exact nature of the present invention lwill become apparent from the following description when considered in connection with the accompanying drawings, and the invention consists in the n'vel form. combination and arrangement of parts hereinafter more fully described, shown in the drawings and claimed.

In the drawings:

Figure l is a vertical section through a pump embodying the present invention, taken substantially on line I--I of Figure 2.

Figure 2 is a vertical transverse section taken on line 2-2 of Figure 1.

Referring in detail to the drawings, the present pump includes a stationary casing composed of a chamber ring 5, side discs 6 and 1 marginally bolted to opposite sides of the chamber ring 5 as at 0, and a cam ring 9 securely tted in a relatively large central opening I of the side discs l. The cam ring Vil projects outwardly of the disc 'i and is bolted at Il to one side of the upper end portion of an upright i2 forming part of a statinary support including a base la. Fitted in the central opening of the cam ring 9 is a bearing sleeve la that projects inwardly beyond the cam ring 0 and has a guide disc I4a fitted on the inner end thereof in spaced relation to the cam ring 9. l

A power shaft i5 is journaled in and extends through the upright i2 and bearing sleeve i4. This drive shaft l5 terminates in a reduced end portion i journaled in a small central opening of disc 6 by means of a bearing l1. The central 'portion of disc 6 is formed at its inner side with a recess Ill Within which is rotatably positioned a disc i9 rigid or integral with the drive shaft I5. A rotor ring is rotatably disposed within the partments 22 with outlet compartments 23. The casing also has side intake ports 24 which com municate with the intake compartments 22 and are adapted to be suitably connected with a supply pipe. Also, the casing is provided with side outlet ports 25 which communicate with'the outlet chambers 23 and are adapted to be suitably connected with a discharge pipe.

The rotor ring 20 is formed with a plurality of radial cylinders 26 having pistons 21 reciprocable therein, and the pistons 2l are provided at their inner ends with rods 28 slidably guided between the disc Ida and the inner end of cam ring 9. Cam ring 9 is provided at its inner end with a cam groove 29 which receives the projecting ends of transverse pins l0 carried by the inner ends of the piston rods 28. Thus, reciprocation of the pistons is effected by the engagement of casing and connected to the disc I9 of power shaft l0 by bolts 2l, said rotor ring being rotatably fitted on the guide disc Ma and the projecting inner end portion of cam ring 9.

The chamber ring 5 is provided at diametrically oppositeA points with intake compartments 22, and at diametrically opposite `points between the comthe pins 30 in the cam groove 29 as the rotor ring and pistons revolve with the drive shaft i5. It will be noted that the cam groove 20 is so formed and arranged that the pistons are given suction strokes while passing the inlet chambers 22 and outward or pumping strokes as they pass the outlet chambers 23.

In operation, shaft l5 is suitably driven so as to rotatethe rotor ring 20 and the pistons 2l carried thereby, relative to the cam ring il and the casing 5, B, 1. As the pistons move across the chambers 22, they are moved inwardly so as to draw the iiuid through parts 2li into chambers 22 and then into the cylinders 20 of said pistons. As the rotor ring continues to revolve, the pistons move across the chambers 23 and the pistons are moved outwardly so as to force the iiuid from the cylinders of said pistons into the chambers 23 and out through the ports 25.

From the foregoing description, it is believed that the construction, operation and advantages of the present invention will be readily under stood and appreciated by those skilled in the art. It will be apparent that the pump is of extremely' simple, compact and durable construction, and that it is composed of a minimum number of simple parts so designed as to provide a very eflicient pump which may be economically manufactured and readily .assembled or taken apart. Minor changes may be made in details of con struction illustrated and described, such as fall within the scope of the invention as claimed.

What I claim is:

1. A rotary pump of the character described comprising a casing, said casing including a chamber ring, side discs marginally bolted to opposite sides of the chamber ring, one of said discs having a relatively large central opening, and a camvring securely tted in and projecting through said opening, a stationary support, means securing said cam ring to said stationary support, a rotary drive shaft extending through and journaled in said cam ring, a rotor ring rotatably tted in the casing about the inner end of the cam ring and provided with a plurality of radial cylinder bores, said cam ring having a cam groove in the inner end thereof, pistons reciprocable in said cylinder bores and provided with rods at their inner ends, transverse pins carried by said piston rods and engaged in the cam groove of the cam ring, and means to secure the rotor ring to said drive shaft, said chamber ring having inwardly extending ribs which combine with the inner faces of the side disks, the inner periphery of the chamber ring and the rotor ring periphery to denne inlet and outlet compartments, the casing having side inlet and outlet ports respectively communicating with said inlet and outlet compartments.

2. The construction defined in claim 1 wherein the other side disc is provided with a recess centrally of its inner face, an end of the drive shaft 25 being centrally journaled in said other disc, and a drive disc rigid with the drive shaft adjacent and within the recess of said other side disc and having the rotor secured to the margin thereof.

3. The construction defined in claim 1, in combination with a bearing sleeve tted in and projecting inwardly from the cam ring and having the drive shaft journaled in and extending 'through the same, and a guide disc fitted on the REFERENCES CITED The following references are of record in the ille of this patent:

UNITED STATES PATENTS Number Name Date 1,332,516 ODonnell Mar. 2, 1920 1,974,961 Johnson Sept. 25, 1934 2,115,121 Philips Apr. 26, 1938 

